CVE-2021-24694: Simple Download Monitor < 3.9.11 - Contributor+ Stored Cross-Site Scripting via Shortcodes

Severity: medium (CVSS 5.4 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.6% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2022-01-24 · updated 2026-06-17
Weakness: CWE-79

Description

The Simple Download Monitor WordPress plugin before 3.9.11 could allow users with a role as low as Contributor to perform Stored Cross-Site Scripting attack via 1) "color" or "css_class" argument of sdm_download shortcode, 2) "class" or "placeholder" argument of sdm_search_form shortcode.

Affected products

Simple Download Monitor: before 3.9.11 — fixed in 3.9.11

How to fix

Upgrade to a fixed version: Simple Download Monitor 3.9.11. Check the vendor advisory for mitigations.

References

https://wpscan.com/vulnerability/9d0d8f8c-f8fb-457f-b557-255a052ccc32
https://wpscan.com/vulnerability/9d0d8f8c-f8fb-457f-b557-255a052ccc32

Get alerted when CVE-2021-24694 or the next vulnerability affects your stack